Safety grab-hook.



W. BREIVOGEL.

SAFETY GRAB HOOK.

OATION FILED MAY 20, 1910.

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wwwmw er a WILLIAM BREIVOGEL, OF GLEASON, WISCONSIN, ASSIGNOR T0 HALL L.BROOKS, OF

' TOMAHAWK, WISCONSIN.

SAFETY GRAB-HOOK.

Specification of Letters Patent.

Patented Jan. 17, 1911.

Application filed May 20, 1910. Serial No. 562,491.

To all whom it may concern:

Be it known that I, W ILLIAM BREIVOGEL, a citizen of the United Statesof America, residing at Gleason, in the county of Lincoln and State ofWisconsin, have invented new and useful Improvements in SafetyGrab-Hooks, of which the following is a,

specification.

This invention relates to safety grab hooks which are used in connectionwith chains for the purpose of tying or securing loads of logs and thelike in position for transportation; and it has for its object toprovide a device of simple and improved construction, whereby the endsof a tying chain may be securely connected together in such a manner asto enable them to be readily separated for the purpose of unloading whenthe tying chain is strained and under tension, is usually the case,caused by the partial displacement of the load during transportation.

Vith these and other ends in view which will readily appear as thenature of the invention is better understood, the same consists in theimproved construction and novel arrangement and combination of partswhich will be hereinafter fully described and particularly pointed outin the claims.

In the accompanying drawing has been illustrated a simple and preferredform of the invention, it being, however, understood that no limitationis necessarily made to the precise structural details therein exhibited,but that changes, alterations and modifications within the scope of theinvention may be resorted to when desired.

In the drawing,Figure 1 is a perspective view of the improved grab hookshowing the two ends of the chain connected therewith. Fig. 2 is a sideview, showing the hook thrown open for the disengagement of one end ofthe chain, a portion having been broken away to expose the subjacentconstruction. Fig. 3 is a vertical transverse sectional view, showingthe device closed as in Fig. 1. Fig. 4 is a detail side viewillustrating the operation of the device.

Corresponding parts in the several figures are denoted by likecharacters of reference.

The improved device includes a body comprising a bar or arm 1 having anenlarged head portion B which is split or bifurcated to form sidemembers or cheeks 2, 2 between which an eccentrically disposed member orcam 3 is pivotally mounted upon a pin or bolt 4, said cam having an arm5 which eX- tends laterally adjacent to the upper edge of the arm 1. Thecam 3 has a toe 6 with which a latch member 7 is pivotally connected bya pin 8, said latch member having an offset forming a shoulder 9 adaptedto engage a corresponding shouldered notch 10 in the head member B.

Connected with and extending laterally from the arm 1 is a hook 11adapted to engage a slot 12 in the latch member when the latter isfolded adjacent to the edge of the arm 1, as will be seen in Fig. 1 ofthe drawings. The latch member has a terminal aperture 13 to support oneend link of a chain 14, the other end link or an intermediate link ofwhich is capable of engaging the hook 11 through the slot 12, therebyforming an obstruction which will prevent the latch member fromaccidentally swinging to an open position.

The arm 1 is provided with an aperture 15 for the accommodation of oneend link of the tying chain 17 In the operation of this device, thetying chain is passed around the load which is to be secured, and, aftertightening it as far as possible, the free end of the chain is passedbetween the arms 1 and 5 of the device, after which said arms arebrought together so as to accommodate one chain link fiatwisetherebetween, as is shown at C in Fig. 1, the next chain link Dpresenting an obstruction to the withdrawal of the free end of thechain. The latch member 7 is also brought to a position adjacent to theedge of the arm 1, and the shoulder 9 is placed in engagement with thenotch 10. One link of the chain 14 is now placed in engagement with thehook 11 which projects slightly through the slot 12, thereby securingthe latch member 7 against accidental displacement. To untie the chain,the end link of the chain 14 is disengaged from the hook,

' and the operator may now stand aside while he quickly jerks the chain14 to disengage the latch member, thus causing the arm 5 to swing openunder the strain of the tying chain which now becomes disengaged frombeween the arms 1 and 5.

It is obvious that the chain 14 may be made of any desired length toenable the operator to stand out of the way of possible danger of injuryfrom logs rolling off the load suddenly owing to having been displacedwhile in transit, or a separate trip rope or cord may be provided, ifdesired, such rope or cord being attached either to the chain 1& ordirectly to the aperture13 of the latch member.

Having thus described the invention, what i is claimed as new, is

1. In a device of the character described, a body member comprising anarm having at one end an enlargement forming a bifurcated head, saidhead being provided with a notch in the lOWQI' edge thereof, a cammember supported pivotally between the cheeks of the head member andhaving a laterally extending arm and a nose piece, a latch memberconnected pivotally with the nose piece and having an offset forming ashoulder for engagement with the notch in the head member, and means forsecuring the latch piece in locked relation with reference to the bodyand head member.

2. In a device of the character described, a body member having anenlarged bifurcated head, a cam supported pivotally between the cheeksof the head and having an arm and a nose piece, a latch member connectedpivot-ally with the nose piece and having a shoulder adapted to engage anotch formed in the head, a tying chain en gaging and securely connectedwith the body member, and means for securing the latch member in closedrelation with refer- 1 ence to the body member.

3. In a device of the character described, a body member having abifurcated head and a downwardly extending hook, the head being providedwith a notch, a pivotally supported cam having a nose piece and alaterally extending arm, a latch member pivotally connected with thenose piece and having a longitudinal slot, said latch member beingprovided with a shoulder to engage the notch in the head portion, achain connected with the latch member and having a, terminal linkadapted for engagement with the hook through the slot in said latchmember, a tying chain having a link engaging the body member, and meansfor securely connecting said tying chain with the body member.

In testimony whereof I afiix my signature in presence of two witnesses.

WVILLIAM BREIVOGEL.

Witnesses:

' C. L. BURT,

JAs. D. McCUNN.

